Tool for dressing abrasive wheels.



L. A. VAN ORMAN. TOOL FOR DRESSING ABRASIVE WHEELS.

APPLICATION FILED AUG. 14. 1915.

1,175,207. Patented Mar. 14, 1916.

In re ntor- WITNESS L141 herfllfiertus Van Or'man [am/3 a a 4 7;

A TTORNE Y UNITED STATES rntrnnr om n LUTHER ALBERTUS vAN ORMAN,

EDWIN n. MATUSCHEK, on DETROIT, MICHIGAN.

or DETROIT, MICHIGAN,

TOOL ron ionnssiive ABnnsIvn ,wHEELs'. r

Specification of Letters meat,

Application filedAugust 14,- 1915. -Seria1No.45,449.

T0 allwhomz'tmay concern: I i Be it known that I, LUTHER ALBERTUS VAN ORMAN, a citizen of the United States of America, residing at Detroit, in the county of Wayne and State of Michigan,

have invented certain new and useful Improvements in Tools for Dressing Abrasive Wheels; and I do hereby declare the following to be a full, clear, and exact description.

which providesa safety guard against the particles removed from the abrasive wheel in the act of dressing the same from flying into the face and eyes of the operator, as will more fully appear by reference to the accompanying drawing in which:

Figure 1, shows a side elevation of my improved dressing tool; Fig. 2, shows a side elevation, in perspective, of the handle with all removable partsremoved therefrom; Fig. 3, is a perspective of the dressing disks; l*ig..4, is a perspective of the shaft on which the dressing disks are journaled; and, Fig. 5, is a perspective of the 'hood member, which serves the double purpose of a protective guard and a clamp for holding the shaft detachably in place on the handle.'

Like numerals refer to like parts in all the figures. I s r 1, isthe handle or frame portion of the tool, and the same may be formed from" sheet metal or 'made by casting. This handle is provided with a bifurcated end consisting of the prongs 2, the upper faces of which are inclined and provided with semi-circular recesses 3. The hood member 7, is also provided with a bifurcated end having'prongs 8, the lower surfaces of which are inclined at an angle" to correspond to. the angle of the inclinedv'faces of the prongs 2, of the handle member. The handle 1, is also provided with a recess or opening 4, to receive the lug 4 of the member 7 to locate and hold the rear end of the said member 7, in place relative to the handle 1. The handle 1, is also provided with a screw threaded opening 11, to receive the threaded end of the screw 10. The shaft 5, is. provided with flattened surfaces 6, at its respective ends. 7;-

In assembling the several parts ofthe tool, 7

the shaft 5, is inserted in the axialopenings of the abrading disks 12, a suflicient' number of said disks being used to substantially fill the space between the prongs 2, of the handle 1. The shaft 5, with the disks 12, thereon is placed with its ends engaging the recesses 3, with the flattened ward and the disks 12, between the prongs 2, of the handle 1. The member 7, is then I placed in position, as seen in Fig; 1, with the.

lug P, entered in the opening 4, of the prongs 8, thereof engaging the flattened surfaces 6, of the shaft 5. The screw-10, is then portions 6, up-

ASSIGNOROF ONE-HALF TO f Eatented Man 14, 1916.

handle 1, and the inclined faces of the" passed through the opening 9, in the memher 7, and screwed into the screw threaded opening 11, in the handle 1,until the head of said screw 10, engages the upper surface of the member 7, and thus the several parts of the tool are all securely held in operative position and relation by a single detachable securing means. The shaft 5, willthus be held securely in place and prevented from rotation by being engaged on] the flattened portions 6, thereof by the inclined surfaces of the prongs 8, of the member 7.

The projecting end portion 13, 0f the member 7, forms a hood or guard which will prevent the particles of the abrasive wheel,

which is being removed therefrom in trimming, from flvin'g and striking the operator in the face and eyes.

The several parts of the tool may be easily and quickly assembled or disassembled, and r the same are all held in place and operative position by a single screw 10.

The prevention of the rotation of the shaft 5, provides a firm and rigid support for the disks 12, and also prevents the wearing away of the frame members where the said shaft 5, engages the same, thus permitting'the making the frame members at the point of engagement with the shaft 5, of

light thin material, which could not bepractically done if the said shaft were permitted V 1 to rotate.v Thus it will be. noted that the tool is, practically indestructible, except the 2.111 a tool of the class described, a

handle member'provided with a recess, a

screw threaded opening, and a bifurcated end the prongs of which are provided with recesses, a non-rotatable shaft having flattened surfaces at its ends and adapted to be mounted in the recesses in said prongs, abrading disks rotatably mounted on said shaft, a hood member provided with; a lug to engage the first named recess ,in said handle'and' also provided with an opening to receive a screw and also provided with a bifurcated end the prongs of which are adapted to engage the flattened surfaces of the said shaft, through the said openingin' the hood member and engaging the screw threaded opening in the handle to detachably hold thesev= eral parts in assembled operative relation,

In testimony whereof I hereunto afliX my signature to the foregoing specification and claims.

LUTHER ALBER'IUS *VAN ORMAN.-

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of; Patents,

Washington, D. 0.

and a screw extending, 

